@article{ref1,
title="Spontaneously expectorated penetrating foreign body",
journal="Annals of emergency medicine",
year="1986",
author="Roth, P. and Diven, B.",
volume="15",
number="3",
pages="381-382",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0196-0644",
doi="",
url="http://dx.doi.org/"
}